Headphone



FIG. 1 is a perspective view of a headphone showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The portions indicated in broken lines are for illustrative purposes only and form no part of the claimed design.

The broken away lines in the drawing disclosure indicate indeterminate length of the cable connected to the headphone, which is not claimed. 

The ornamental design for a headphone, as shown and described. 